diff options
Diffstat (limited to '3681/CH3/EX3.8')
| -rw-r--r-- | 3681/CH3/EX3.8/Ans3_8.PNG | bin | 0 -> 5467 bytes | |||
| -rw-r--r-- | 3681/CH3/EX3.8/Ex3_8.sce | 19 |
2 files changed, 19 insertions, 0 deletions
diff --git a/3681/CH3/EX3.8/Ans3_8.PNG b/3681/CH3/EX3.8/Ans3_8.PNG Binary files differnew file mode 100644 index 000000000..b73707728 --- /dev/null +++ b/3681/CH3/EX3.8/Ans3_8.PNG diff --git a/3681/CH3/EX3.8/Ex3_8.sce b/3681/CH3/EX3.8/Ex3_8.sce new file mode 100644 index 000000000..f3b988b8e --- /dev/null +++ b/3681/CH3/EX3.8/Ex3_8.sce @@ -0,0 +1,19 @@ +// Calculating the apparent flux density
+clc;
+disp('Example 3.8, Page No. = 3.23')
+// Given Data
+Ws = 10;// Slot width in mm
+ys = 28;// Slot pitch in mm
+L = .35;// Grass core Length in meter
+nd = 4;// Number of ventilating ducts
+Wd = 10;// Width of each ventilating Duct in mm
+Breal = 2.15;// Real flux density in Wb per meter square
+at = 55000;// mmf per meter corresponding to real flux density and permeability
+Ki = 0.9;// Stacking Factor
+// Calculation of apparent flux density
+Li = Ki*(L-nd*Wd*10^(-3));// Net iron length
+Wt = ys-Ws;// Tooth width in mm
+Ks = L*ys/(Li*Wt);
+Bapp = Breal+4*%pi*10^(-7)*at*(Ks-1);
+disp(Bapp,'Apparent flux density(Wb per meter square)=');
+//in book answer is 2.2156 Wb per meter square. The answers vary due to round off error
|
